Ultrasonic attenuation in parallel-nylon-wire cancellous-bone-mimicking phantoms

2008 ◽  
Vol 124 (6) ◽  
pp. 4042-4046 ◽  
Author(s):  
Keith A. Wear
Keyword(s):  
Cancellous Bone ◽  
Ultrasonic Attenuation

scholarly journals Influence of cancellous bone microstructure on ultrasonic attenuation: a theoretical prediction

2019 ◽  
Vol 18 (1) ◽  
Author(s):  
Jinjin Liu ◽  
Li Lan ◽  
Jiafeng Zhou ◽  
Yunjun Yang
Keyword(s):  
Experimental Data ◽  
Theoretical Model ◽  
Cancellous Bone ◽  
Ultrasonic Attenuation ◽  
Broadband Ultrasound Attenuation ◽  
Bone Microstructure ◽  
Frequency Range ◽  
Attenuation Measurement ◽  
Ultrasound Attenuation ◽  
Scatterer Size

Abstract Background Quantitative ultrasound has been used for the assessment of cancellous bone status. The attenuation mechanisms of cancellous bone, however, have not been well understood, because the microstructure of cancellous bone is significantly inhomogeneous and the interaction between ultrasound and the microstructure of cancellous bone is complex. In this study, a theoretical approach was applied to investigate the influence of the microstructure of cancellous bone on ultrasonic attenuation. Results The scattering from a trabecular cylinder was significantly angle dependent. The dependencies of the ultrasonic attenuation on frequency, scatterer size, and porosity were explored from the theoretical calculation. Prediction results showed that the ultrasonic attenuation increased with the increase of frequency and decreased linearly with the increase in porosity, and the broadband ultrasound attenuation decreased with the increase in porosity. All these predicted trends were consistent with published experimental data. In addition, our model successfully explained the principle of broadband ultrasound attenuation measurement (i.e., the attenuation over the frequency range 0.3–0.65 MHz was approximately linearly proportional to frequency) by considering the contributions of scattering and absorption to attenuation. Conclusion The proposed theoretical model may be a potentially valuable tool for understanding the interaction of ultrasound with cancellous bone.

ULTRASONIC ATTENUATION DUE TO ZENER RELAXATION IN SINGLE-CRYSTAL PALLADIUM HYDRIDE

1983 ◽  
Vol 44 (C9) ◽  
pp. C9-419-C9-424
Author(s):  
R. G. Leisure ◽  
T. Kanashiro ◽  
P. C. Riedi ◽  
D. K. Hsu
Keyword(s):  
Single Crystal ◽  
Ultrasonic Attenuation ◽  
Palladium Hydride

The Repair and Healing of Two Traumatic Ilial Body Fractures Adjacent to Cemented Total Hip Acetabular Components

1992 ◽  
Vol 05 (02) ◽  
pp. 85-89
Author(s):  
P. K. Shires ◽  
T. L. Dew
Keyword(s):  
Internal Fixation ◽  
Cancellous Bone ◽  
Surgical Techniques ◽  
Autogenous Bone ◽  
Cancellous Bone Graft ◽  
Standard Methods ◽  
Intravenous Antibiotics ◽  
Prophylactic Use ◽  
Acetabular Components ◽  
Autogenous Bone Grafts

SummaryThis report has documented the repair and healing of two ilial fractures in dogs which were compounded by the presence of a cemented acetabular prosthesis. While specific recommendations can not be made from such a small number of cases, the information presented herein suggests that such fractures will heal without complication if aseptic surgical techniques and standard methods of internal fixation are employed. The authors strongly recommend the prophylactic use of intravenous antibiotics and the placement of cancellous bone graft when the repair of such fractures is attempted.Two traumatic ilial fractures involving the cement/bone interface of acetabular prostheses were repaired using lag screws, cerclage wires, and autogenous bone grafts. The fractures healed and ambulatory function was regained.

Arthrodesis of the Distal Two Tarsal Joints in the Horse Using Perforated Stainless Steel Cylinders and Cancellous Bone Graft

1991 ◽  
Vol 4 (01) ◽  
pp. 21-27 ◽  
Author(s):  
R. M. Archer ◽  
R. K. Schneider
Keyword(s):  
Stainless Steel ◽  
Bone Graft ◽  
Cancellous Bone ◽  
Cancellous Bone Graft ◽  
The Third ◽  
Partial Fusion

SummaryTwo perforated stainless steel cylinders and autogenous cancellous bone were implanted into each of the distal intertarsal and tarsometatarsal joints of seven horses. In two control horses holes were drilled into each joint and autogenous cancellous bone was implanted without stainless steel cylinders. Horses which had cylinders implanted in the distal tarsal joints exhibited less lameness and were more comfortable following surgery than were the control horses. Fracture of the third tarsal, central tarsal, or third metatarsal occurred in five of the seven horses implanted with stainless steel cylinders within 45 days of surgery. Two implanted horses and two control horses were observed for five months after surgery. Partial fusion of the distal tarsal joints occurred in all four horses. Control horses were more lame than the implanted horses and developed a large bony exostosis over the medial distal tarsus.

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